Tag Info

1 vote
Accepted

Magnetising Inductance / Primary Inductance

if the magnetising inductance (which the primary inductance) is defined as 100uH then why it is seperated as 100uH and 10mH on the primary ? This is my question. Without the parasitics, a real-world ...
• 36.4k

Is this PFC choke design correct?

Beware of proximity effect which is the other eddy loss. At lower frequencies like 200 kHz, proximity effect losses will be much higher than skin effect losses. I quickly whipped up some loss ...
• 10.3k
Accepted

Is this PFC choke design correct?

Your calculations are more or less correct and consistent. The choice or range of options can be improved, however. Don't worry about litz: it's not at all needed for such a low ripple fraction. I ...
• 39.9k
Accepted

Transformer modelling / coupled inductors

In the beginnig of V2 equation in the picture where does the n.Lm come from ? The inductor's voltage-current relationship is:- $$v_L = L \ \frac{di_L}{dt}$$ The voltage across the primary ...
• 36.4k
Accepted

• 15.2k

Why inductor don't discharge completely even when the duty cycle is 50%?

I only see a voltage curve, and that one gets messed up by the potential change when the transistor opens and closes. I'm sure you can set up the simulation tools to plot the current curve flowing ...
• 10.4k

What happens when you insert an inductor between Vcc and a MOSFET's drain?

You must be more careful when making schematics: - ... Or you will get confusing results. Your 2nd diagram is correct. The inductor will produce a flyback voltage when the MOSFET turns off. So, if ...
• 465k
Accepted

Are there safety concerns with hooking an inductor to a MOSFET and generating 85V spikes from a 9V source?

The breadboard will probably be fine, but anything above ~30VDC cannot be considered touch safe. In addition, the circuit you have does not regulate its output so the 85V figure could be low or high ...
• 20.4k

Freewheeling diode in a capacitor

I'd say the 'symmetry' logic is not fully applied here. The diode at inductor is added to take care of the situation when the current through the inductor (tries to) decay, the inductor (tries to) ...
• 316
1 vote

Connecting the LC circuit to dc voltage source without transient

I have been looking for a control algorithm how to achieve a state when both of the upper transistors are open and this state has been achieved without transient in the LC circuit. I don't believe ...
• 465k